I have 2 of them running here connected to BBGWs and performance is
satisfactory so far.
On Wednesday, July 26, 2017 at 7:48:18 PM UTC-4, john3909 wrote:
>
> This looks like a much better solution given that this module is powered
> from 3v3.
>
> Regards,
> John
>
--
For more options, visit ht
This looks like a much better solution given that this module is powered from
3v3.
Regards,
John
> On Jul 26, 2017, at 4:17 PM, Greg wrote:
>
> Here is what I used:
>
> https://www.seeedstudio.com/Grove-High-Precision-RTC-p-2741.html
>
> I'm using the Greens so it conveniently plugs in to
OK, if you read the datasheet, you will see VIH = 2v2 and VIL = 0v8, which
means the I2C signals are compatible with a 3v3 pullups. The module you
referenced has pullup resistors to 5v0, which means they must be removed. There
are voltage convertors from TI for I2C devices, but in this case they
The page you've linked is 404. But . .
#1 3v3 is the absolute max you want to put on any beaglebone I/O pins ADC
lines are max 1v8
#2 If those are pullups, you have to have pullups on any I2C SCL / SDA line.
You need to read the datasheet for that part. If in fact the I2C data and
clock lines are
Just to be clear, the Adafruit module has 2k2 resistors to 5V. These must be
removed. However, the BBB still needs pullup resistors to 3v3.
Regards,
John
> On Jul 26, 2017, at 1:42 PM, William B wrote:
>
> Hi!
> I'm installing a real-time clock (RTC) on Beaglbone Black and I'm seeing
> di
Connect the pullup resistors to 3v3.
Regards,
John
> On Jul 26, 2017, at 1:42 PM, William B wrote:
>
> Hi!
> I'm installing a real-time clock (RTC) on Beaglbone Black and I'm seeing
> divergent information abount hardware of the DS1307 integrated circuit, that
> operates at 5V voltage, wh
Hi!
I'm installing a real-time clock (RTC) on Beaglbone Black and I'm seeing
divergent information abount hardware of the DS1307 integrated circuit,
that operates at 5V voltage, while the I2C IO buses of the BeagleBone
operate at 3.3V.
In the Adafruit RTC, they indicate removing the SCL and SD
